dermatologist jerome is going to check out several small moles on marcy's skin using a new noninvasive technology. it promises to cut the number of biopsies marcie needs. >> it is designed not as a screening tool for all moles but for suspicious moles that we want to get a second opinion on. >> the recently approved fda deadvice is called melafind. it combines multiple light waves with a foe ton sensor. >> ready, one, two and three. >> the result is a multi-dimensional look of the makeup of individual skin lesions including layers not visible to the naked eye. >> it analyzes the degree of a symmetry and pigment throughout multiple layers in the skin. >> it use as series of algorhythms to produce a score. >> we know from clinical studies the average score formal nopa is about 3 .5. if something is zero are below we know it's almost certainly benign. >> still, there are limitations. the device is not currently spot common nonmelanoma cancers. the doctor said it's best used as an added tool to confirm a dermatologist's clinical judgment on questionable lesions. this woman comes for regular screening